The inmates at Oklahoma prison make an average of 437 license plates pr day. The warden feels that their production should be higher and suspects that the inmates are wasting a lot of time n the job. In order to test his opinion, he obtains the mean license plate production for a sample of nine other prisons in the state. data below:
452, 440, 464, 461, 435, 439, 449, 459, 446
Based on the data, can the warden reject the null hypothesis that the inmates are no less productive in making license plates than are the inmates at other prisons?